JP2009045616A - Volume reduction apparatus of foamed polystyrene - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost and simple volume reduction apparatus for small-scaled crushing, easily crushing used foamed polystyrene. <P>SOLUTION: The volume reduction apparatus has a hopper 4 for receiving charged foamed polystyrene 5 at an upper part. A rotatable shaft body 12 is disposed below the hopper 4, a crushing member 13 fixed to an outer periphery of the shaft body 12 rotatingly crushes the charged foamed polystyrene. A fixed teeth member 14 with teeth 14a formed on a disc-like member is disposed at the end of a support body 11. A rotary teeth member 17 with teeth 17a formed on a disc-like member and fixed to an end of the shaft body 12 is disposed facing the fixed teeth member 14. The foamed polystyrene 5 is crushed between the fixed teeth member 14 and the rotary teeth member 17. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a volume reduction device for crushing and pulverizing expanded polystyrene. More specifically, the present invention relates to a volume reduction device that mechanically crushes, crushes, and reduces the volume of used polystyrene foam.

  Styrofoam is a material containing air bubbles, and each is partitioned by independent fine air chambers (closed air bubbles), so it has very low thermal conductivity, impervious to water, and impact resistance. It has features such as high. In addition, it can be easily molded into various shapes, and has traditionally been used in a wide range of fields such as containers, cushioning materials, building materials and civil engineering, for example, containers for agricultural and marine products that carry fish, vegetables, etc. Buffer materials and packaging materials that protect excellent food containers, home appliances, etc. from impacts, etc., heat insulation building materials with excellent outside air blocking, heat insulation and heat insulation properties, road foundations, tunnel roofs, cultured squid and floats for floating piers, etc. It is used for various purposes. Since these polystyrene foams contain bubbles, they are lightweight and occupy a large volume.

  In addition, after the polystyrene foam is used, those that do not follow the route for recovery and recycling are discarded. In the case of recycling, recovering the state as it is without changing the form is light in weight but large in volume, so it costs transportation cost. For this reason, the volume is reduced (reducing the volume and volume) by pulverizing it into small pieces, crushing it, or dissolving it with a solvent or heat. The volume-reduced expanded polystyrene can be collected and reused as a raw material for plastic, recycled expanded polystyrene, fuel, and the like.

  In this volume reduction, large-scale consumers such as large-scale retail stores and markets that handle large amounts of foamed polystyrene are equipped with a volume-reducing device dedicated to foamed polystyrene to crush and reduce the volume of foamed polystyrene. About this volume reduction device, those of various principles have been proposed and used, for example, a volume reduction machine provided with screw blades and crushing arms for crushing, transporting and compressing waste such as polystyrene foam, It is known that the polystyrene foam introduced into the hopper is crushed by the rotation of screw blades and compressed and conveyed in the screw axial direction (for example, see Patent Documents 1 and 2). At the end of this screw blade, it is a device that is pushed into a compression cylinder and taken out as expanded polystyrene having small particles.

Also, as another example, a device for processing foamed polystyrene into a powder form, a device having grinding parts disposed opposite each other in a substantially V shape that gradually approach each other in the feed direction, and a pair of grinding belts Are made to run at different speeds, and in the meantime, a polystyrene foam is fed into a powder form (for example, see Patent Document 3).
JP 2004-351235 A JP 2003-181834 A Japanese Patent Laid-Open No. 08-267453

  Styrofoam is inevitably bulky from the form containing bubbles. The problem is in processing after use. Styrofoams such as used empty containers are light in weight and easy to transport, but have a large volume and require a large space for storage or disposal. In particular, when it is used in large quantities, the processing load such as disposal is heavy, and it takes a lot of time to handle the processing, and there is a problem that the original work is pressed and efficiency is lowered. In addition, it is becoming increasingly difficult to secure an industrial waste disposal site for disposal, and recycling is required.

  As described above, an apparatus for crushing this foamed polystyrene is conventionally known. However, there are various types of pulverizers, such as those having a screw shaft and those pulverized by a grinding belt, all of which are large and have high processing capacity. Accordingly, the crushing apparatus is expensive, and the users who can install the equipment are limited to large-scale and large-scale crushing companies such as large-scale retail stores such as the market and large shopping centers. This expanded polystyrene is also used in small-scale retail stores with small store space and sales space, such as so-called small fish shops and greengrocers, and must be processed in some form after use.

  In small-scale retail stores, most of the used polystyrene foam is discarded as it is or placed in the corner space of the storefront. In order to place a conventional crushing apparatus, the apparatus is large and expensive, so that it is not installed in small users such as small retail stores. For this reason, it has been desired to develop a simple and low-priced device that can be placed at a storefront, in a store, etc. even in a small retail store. In other words, polystyrene is collected from large-scale retail stores, markets, etc., so the recycling rate is said to be better than other plastics, but in order to further improve the recycling rate, collection from small-scale retail stores etc. The rate must be improved.

  Further, even if the expanded polystyrene is recovered and recycled, if the container or the like is recovered as it is, the recovery vehicle for this purpose is in a state of carrying a considerable amount of air. That is, compared with the energy consumed by the collection vehicle for transportation, the amount of foamed polystyrene that can be collected is small and the collection cost is increased, which is one of the factors that hinder the recycling (recycling) of foamed polystyrene.

  The present invention has been made in order to solve the problems of the prior art as described above, and achieves the following object.

  The purpose of the present invention is to facilitate the collection and recycling of used polystyrene foam in a small-scale user such as a small retail store. An object of the present invention is to provide a simple type volume-reducing apparatus for expanded polystyrene, which is configured to save space.

The present invention adopts the following means in order to achieve the object.
The volume reduction device for the expanded polystyrene of the present invention 1 comprises:
A base having a hopper for receiving the injection of foamed polystyrene, a shaft supported on the base and below the hopper, and a rotatable shaft, fixed to the outer periphery of the shaft, and rotated in the foamed polystyrene. A fixed tooth member in which teeth for crushing the polystyrene foam are formed on a crushing member that crushes while driving, a drive device that is provided on the base body and that rotates the shaft body, and a disk-like member that is fixed to the base body And a rotating tooth member having teeth formed on a disk-shaped member for crushing the foamed polystyrene fixed to the shaft body and facing the teeth of the fixed tooth member, and crushed by the crushing member. Consists of.

The volume reduction device for expanded polystyrene of the present invention 2 is the present invention 1,
The crushing member is a spiral wing fixed to the shaft body.

The volume reduction device for expanded polystyrene of the present invention 3
A base body having a hopper for accepting the introduction of polystyrene foam, a first shaft body supported on the base body and supported on the lower side of the hopper, and rotatable, and fixed to the outer periphery of the first shaft body. A rotating lever body having a blade portion on an outer edge to crush the foamed polystyrene while rotating, a first driving device provided on the base body for rotationally driving the first shaft body, and a circle fixed to the base body A fixed tooth member in which teeth for crushing the foamed polystyrene are formed on a plate-shaped member, and a disk shape for crushing the foamed polystyrene crushed by the lever body facing the teeth of the fixed tooth member A rotating tooth member having teeth formed thereon, a second shaft body rotatably supported by the base body and having the rotating tooth member fixed thereto, and a second driving device for rotationally driving the second shaft body; Consists of.

The expanded polystyrene volume reducing device of the present invention 4 comprises the present invention 1 to 3,
The teeth of the fixed tooth member and the teeth of the rotating tooth member are teeth that are provided along the radial direction on the disk-shaped member and intersect with each other in an arrangement opposite to each other in a relative rotational state. It is characterized by being.

The volume-reducing apparatus for expanded polystyrene according to the fifth aspect of the present invention is the first to third aspects of the present invention.
The position of the rotating tooth member is adjusted by an adjusting member that can adjust a gap size between teeth facing each other with the fixed tooth member.

The volume-reducing apparatus for expanded polystyrene according to the sixth aspect of the present invention is the first to third aspects of the present invention.
The teeth of the fixed tooth member and the teeth of the rotary tooth member are formed with a stepped shape on the face plate.

The expanded polystyrene volume reducing device of the present invention 7 includes the present invention 1 to 3,
The fixed tooth member is detachably provided on the base body.

The expanded polystyrene volume reducing device of the present invention 8 includes the present invention 1 to 3,
The material of the fixed tooth member and the rotary tooth member is ceramics manufactured by firing.

The expanded polystyrene volume reducing device according to the ninth aspect of the present invention is the first to third aspects of the present invention.
The fixed tooth member and the rotating tooth member are made of natural or artificial stone.

The volume reduction device for a polystyrene foam of the present invention 10 is the present invention 3,
The first drive device and the second drive device are the same drive source, and the first shaft body and the second shaft body are connected via an interlocking mechanism.

  As described above in detail, the expanded polystyrene volume reducing device of the present invention can be a simple and simple configuration that is small and simple, and improves reliability and ease of maintenance. I was able to. In addition, because it is a space-saving type that does not take up installation space, it has become possible to dispose of polystyrene foam easily and efficiently, so even small-scale users such as small retail stores can install it at low cost. Can be used widely. In other words, since the volume can be easily reduced even by a small user such as a small retail store, it is possible to facilitate the recovery of the expanded polystyrene, contribute to the recycling (recycling) of the expanded polystyrene, and reduce waste.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Embodiment 1]
FIG. 1 is a front view schematically showing the entire volume-reducing apparatus for foamed polystyrene according to Embodiment 1, and FIG. 2 is a cross-sectional view showing a main structural portion for crushing and pulverizing foamed polystyrene. As shown in FIG. 1, the volume reduction apparatus of a polystyrene foam has a main body 1 in a box shape, and each apparatus such as a conveyance / compression apparatus described later is built in the main body 1. A caster 2 is attached to the lower portion of the main body 1, and a person can manually push and move a foam volume reduction device (hereinafter referred to as volume reduction device) and install it at any place. Can do. The foamed polystyrene 5 (see FIG. 2) is manually input from the input unit 3 disposed on the front surface above the main body 1.

  The expanded polystyrene 5 having a size larger than that of the input unit 3 may be input after the input person crushed it small by hand. A hopper 4 is disposed in the charging portion 3 of the main body 1. Styrofoam 5 which is an object to be processed (object to be crushed) is input from an input port of the hopper 4. Moreover, in this Embodiment 1, as shown in FIG. 1, although the position of the insertion port was set to the upper side of the front surface of the main body 1, the upper surface of the main body 1 was opened and the hopper 4 having the insertion port was disposed. It may have a configuration that can be inserted into the insertion port of the hopper 4 from directly above. The expanded polystyrene 5 introduced into the hopper 4 is guided along the inner surface of the hopper 4 to one end side of the conveying / compressing device 6. The conveying / compressing device 6 is provided with a spiral blade (hereinafter referred to as a spiral blade) 13 which is a spiral blade fixed to the outer periphery of the screw shaft 12. The foamed polystyrene 5 is crushed foamed polystyrene 5a that is crushed into a predetermined size while being rotationally compressed in the transport / compression device 6 and becomes the other end side of the transport / compression device 6 (the other end of the spiral blade 13). To the crushing / compressing device 7 provided on the part side).

  In this pulverizing / compressing device 7, the crushed foamed polystyrene 5 a is finely crushed and reduced in volume to become crushed foamed polystyrene 5 b which is discharged and recovered from the discharge port 8. The shaft portion 12a, which is one end portion of the screw shaft 12, is regulated by the main body 1 in the axial direction and is rotatably supported by the support 11 via a bearing (not shown). The other end side has a simple configuration in which the spiral blade 13 is supported on the inner wall of the main body 1 (see FIG. 2). This is a simple support structure considering that the object to be handled is a lightweight polystyrene foam 5, but is not limited to the structure shown in this figure.

  The conveying / compressing device 6 and the pulverizing / compressing device 7 are driven via a belt 10 by a motor 9 disposed and fixed inside the main body 1. The volume reducing device of the first embodiment is configured as described above, and will be described in more detail focusing on the pulverizing / compressing device 7 which is a feature of the volume reducing device. 2-7 is a figure which shows a series of structures until the polystyrene foam 5 from the hopper 4 is crushed, grind | pulverized, and collect | recovered. A part of the main body 1 rotatably supports a spiral blade 13 of the screw shaft 12 as a support 11. That is, the spiral blade 13 of the screw shaft 12 is rotatably supported by the peripheral surface of the cylindrical inner hole 11a formed inside the support body 11. At the same time, the support 11 is also a transfer path for sending the foamed polystyrene 5 to the pulverizing / compressing device 7.

  As shown in FIG. 2, in the first embodiment, the hopper 4 that receives the foamed polystyrene 5 is integrated with the support 11. That is, the hopper 4 and the support body 11 are integrated, but the hopper 4 is formed of a thin steel plate and attached to the support body 11 with bolts or the like so that it can be detached. Also good. Although not shown, the support 11 is fixed to the frame of the main body 1. The screw shaft 12 is disposed in a frame below the support 11 and is rotationally driven via a belt 10 by a fixed motor 9. Since the spiral blade 13 is inserted and arranged with a gap in a cylindrical inner hole 11a formed in the support 11, the spiral blade 13 is rotatably held in the inner hole 11a.

  The screw shaft 12 has a shaft portion 12a, which is one end portion thereof, supported by the support 11 so as to be restricted from moving in the axial direction and rotated, and on the other side, the spiral blade 13 has the inner hole 11a of the support 11 as described above. It is the structure supported by sliding to the inner peripheral surface of this. The spiral blade 13 is a plate that is twisted into a spiral shape and fixed to the screw shaft 12 by welding or the like. The spiral blade 13 is also rotated with the rotation of the screw shaft 12 and is moved from the hopper 4 side (one side) and guided to the intermediate discharge side (the other side) while crushing the expanded polystyrene 5 fed from the hopper 4.

  A flange-shaped fixed tooth member 14 is provided integrally with the support 11 at the end of the support 11 on the discharge side. The fixed tooth member 14 is integrated with the support body 11, but may be a member separated from the support body 11. The fixed tooth member 14 has a disk shape having an end surface (side surface) that forms flat crushing, and teeth 14a are engraved on the end surface. The shape of the tooth 14a is such that a concavo-convex portion is provided in a spiral shape from the center of the disk toward the outer periphery. The cross-sectional shape is such that the concavo-convex part, that is, the convex part 15 and the concave part 15a are alternately wave-like (for example, triangular wave-like) (see FIGS. 4 and 6).

  On the other hand, a rotating tooth member 17 is provided at the end of the screw shaft 12 on the discharge side. The rotating tooth member 17 has a disk shape like the fixed tooth member 14, and teeth 17 a are engraved on the end face (side surface) and face the teeth 14 a of the fixed tooth member 14. The surface of the rotary tooth member 17 on the side facing the teeth 14a is formed to have an acute angle with respect to the radial direction of the disk (see FIG. 2). Moreover, the clearance gap formed between the rotation tooth member 17 and the fixed tooth member 14 becomes relatively narrow toward the outer peripheral side from the inner side which is a center part. Further, the teeth 17a of the rotating tooth member 17 are provided with concavo-convex portions in a spiral shape from the center toward the outer periphery in the same manner as the teeth 14a of the fixed tooth member 14. 16 and the recess 16a are alternately wavy (for example, triangular wave) (see FIGS. 3 and 5).

  The directions of the teeth 17a of the rotating tooth member 17 and the teeth 14a of the fixed tooth member 14 are such that the uneven portions of the tooth surfaces cross each other and cross each other when installed facing each other. The rotating tooth member 17 at the end of the screw shaft 12 is attached to the fixed tooth member 14 so that the axial clearance can be adjusted. The gap between the teeth 14a of the fixed tooth member 14 and the teeth 17a of the rotating tooth member 17 can be adjusted by the adjusting member so as to have an optimum dimension in accordance with the pulverization state of the polystyrene foam 5.

  This attachment method has, for example, a nut fastening structure as shown in FIG. 7, that is, when the nut 18 is rotated in the tightening direction, the rotary tooth member 17 is resisted against the biasing force of the spring member 19 in the axial direction. When the nut 18 is rotated in the direction of loosening, the gap is increased by the biasing force of the spring member 19. In this way, the gap is adjusted and fixed from the outside of the main body 1. Needless to say, this adjustment method is not limited to the first embodiment, and may be another known adjustment method.

  Next, a method for crushing and pulverizing the supplied polystyrene foam 5 will be described. Styrofoam 5 is randomly introduced into the hopper 4. The introduced polystyrene foam 5 is pushed and crushed between the inner hole 11a of the support 11 and the screw shaft 12 along the shape of the spiral blade 13 of the rotating screw shaft 12. Furthermore, the polystyrene foam 5 is transferred and pushed out in the discharge direction while being crushed. Next, the crushed foamed polystyrene 5 a pushed out to the other end side of the spiral blade 13 is pushed into the gap between the teeth 14 a of the fixed tooth member 14 and the teeth 17 a of the rotating tooth member 17.

  The crushed foamed polystyrene 5a that has been pushed in is pulverized while being further rubbed by the relative rotation of the fixed tooth member 14 and the rotating tooth member 17, and is pushed out toward the outer periphery where the gap becomes smaller in a tapered shape while gradually becoming finer. Due to the effect of this narrow gap, the crushed foamed polystyrene 5a further promoted by pulverization becomes a granular crushed foamed polystyrene 5b and is discharged. Since the teeth 14a of the fixed tooth member 14 and the teeth 17a of the rotating tooth member 17 face and rotate relative to each other with the concavo-convex shape crossed as described above, the crushed foamed polystyrene 5a is scraped off at the tooth surface, that is, It is pulverized by the principle that grain is pulverized by a stone mill. The pulverized foamed polystyrene 5b thus pulverized falls downward in the main body 1 and is collected from the discharge port 8. If a collection box or a collection bag is provided in the vicinity of the discharge port 8, the volume-reduced expanded polystyrene (for example, pulverized foamed polystyrene 5 b) can be easily collected without being scattered around the discharge port 8.

[Embodiment 2]
8 and 9 are sectional views showing Embodiment 2 of the volume reducing device. In the second embodiment, the screw shaft 22 is rotatably supported by bearings 25 and 26 at both ends of the screw shaft 22, and the spiral blade 23 is supported by the support body 21 of the main body. It is free. The drive mechanism for driving the screw shaft 22 with the motor 9 and the belt 10 is the same as that described above. The hopper 24 is configured to be attachable to and detachable from the support body 21, and is attached to the support body 21 by bolts via flange portions 21a and 24a. A fixed tooth member 27 is detachably attached to the support 21. This attachment / detachment is performed by a bolt 27a, and this fixed tooth member 27 can be replaced when tooth wear occurs.

  Moreover, by using the fixed tooth member 27 as a member separated from the support 21, a member having a high hardness can be obtained, and the crushability can be improved. A rotating tooth member 28 is fixed to the end of the screw shaft 22 with a key. The tooth member 29 of the rotary tooth member 28 is not an integral structure but is a separate member that is detachably attached by a bolt 29a. As in the case of the fixed tooth member 27, this can be a member having high hardness in consideration of wear and the like, and tooth correction and replacement can be easily performed only by the tooth member 29.

  The end surface (rear end surface) of the tooth member 29 of the rotating tooth member 28 is an inclined surface. Since this inclined surface forms a gap between the fixed tooth member 27 and the tooth member 29 facing the spiral blade 23, the crushed foamed polystyrene 5a that has been pushed in and compressed from the spiral blade 23 is guided into this gap. . Further, two nuts 30 and 31 are screwed to the front end portion of the screw shaft 22 along the rotary tooth member 28. One nut 30 is engaged with the circumferential groove 28 a of the rotating tooth member 28 via a pin 32, and the rotating tooth member 28 can move only in the axial direction via the pin 32 by rotation of the nut 30.

  By this movement, the gap with the fixed tooth member 27 is adjusted. When the position of the rotary tooth member 28 is determined, the other nut 31 is tightened to fix the rotary tooth member 28 to the screw shaft 22. This adjustment structure may be a structure through a spring 19 as shown in FIG. An end portion of the screw shaft 22 is rotatably supported by a stay 34 fixed to the support 21 with a bolt 33 via a bearing 26. Therefore, the screw shaft 22 is rotatably supported in a state where the axial direction is regulated by the bearings 25 and 26 at both ends. The stay 34 is configured as a member that supports the screw shaft 22, but does not cover all the rotating body portions such as the rotating tooth member 28.

  Therefore, it is preferable to attach a cover, i.e., the upper cover 35 and the side cover 36, to cover the upper and side surfaces of the exposed parts other than the stay 34 for the rotating body. That is, the user is prevented from accidentally contacting a rotating body such as the rotating tooth member 28. The lower part has an open structure, and the pulverized crushed foamed polystyrene 5b is discharged and collected in a collection box 37. When it is necessary to adjust the gap, the nuts 30 and 31 can be operated by removing the upper cover 35, so that the gap can be easily adjusted.

  In the second embodiment, the screw shaft 22 is shortened as compared with the first embodiment. The spiral blades 23 have a function of crushing the foamed polystyrene 5 introduced into the hopper 24. However, the foamed polystyrene 5 pushed into the support 21 and the spiral blades 23 maintains a constant volume when crushed at the entrance. Then move. The process of this moving part is shortened and it is set as the structure which guides the crushing foam polystyrene 5a just after crushing to the crushing compression process. With this configuration, the device itself can be made small and compact.

[Embodiment 3]
Next, a third embodiment of the volume reduction device having a different overall configuration will be described. 10 and 11 show the overall configuration of Embodiment 3 of the volume reduction device, which is a volume reduction device 51 having a structure in which the expanded polystyrene 5 is introduced from above and crushed in the vertical direction. In the figure, the expanded polystyrene 5 is introduced into a hopper 53 from an upper introduction port 52. At the bottom of the hopper 53, one end of a lever body 55 having a blade portion 54 at the tip for crushing is fixed to a shaft body 56 that is driven to rotate. Further, this symmetrical position, that is, an angle of about 180 degrees is set. It is placed and placed.

  Further, a plurality of sets of the two lever bodies 55 are arranged in parallel along the axis of the shaft body 56. For example, in the third embodiment, four sets are arranged. The shaft body 56 is rotated via the belt 58 by the drive of the motor 57. Therefore, when the shaft body 56 is driven to rotate, the blade portion 54 of the lever body 55 rotates as indicated by a rotation locus 59. This rotation trajectory straddles the bottom plate of the hopper 53 having an L-shaped cross section. For this reason, when the foamed polystyrene 5 is introduced into the hopper 53, the blade portion 54 immediately bites into and crushes the foamed polystyrene 5 mounted on the bottom plate of the L-shaped hopper 53.

  The crushed foamed polystyrene 5 is transferred to the crushing chamber 60 or dropped, and is guided and guided from the inclined guide plate 61 of the crushing chamber 60 to the intermediate discharge port 62. The expanded polystyrene 5 guided, crushed and guided to the intermediate discharge port 62 is guided to the crushing chamber 63. A fixed tooth member 64 is fixed to the wall surface of the intermediate outlet 62 with the teeth facing outward (lower side in FIGS. 10 and 11). A rotating tooth member 65 is rotatably provided facing the fixed tooth member 64. The rotating tooth member 65 is supported by a support 67 through a rotating shaft 66 and is rotationally driven by a motor 68 through a belt 69.

  Eventually, the polystyrene foam 5 guided to the intermediate discharge port 62 is configured to be received by the rotating tooth member 65, and is further finely pulverized while being relatively rubbed with the fixed tooth member 64 as it rotates. Since the pulverization configuration by the fixed tooth member 64 and the rotating tooth member 65 is the same as described above, detailed description thereof is omitted. The pulverized polystyrene foam 5 is discharged from the outer periphery between the fixed tooth member 64 and the rotary tooth member 65, falls downward, and is recovered outside the apparatus along the inclined surface of the recovery receiving base 70.

  The rotating tooth member 65 can be moved in the vertical direction by a screw 72 of a position adjusting device 71 attached to the wall surface of the apparatus base body together with the support 67, and the gap adjustment with the fixed tooth member 64 can be performed. . Thus, the volume reducing device of the third embodiment is configured to move the expanded polystyrene from its top to its bottom by its own weight. For this reason, there is an advantage that the installation space can be reduced with a compact size as compared with the type that moves in the horizontal direction. Moreover, since the foamed polystyrene 5 which is a to-be-processed object (to-be-crushed object) is dropped using gravity, there is little energy loss at the time of crushing.

[Embodiment 4]
Embodiment 4 of the volume reducing device is a modification of Embodiment 3 described above, and its configuration is shown in FIG. FIG. 12 is a partial side cross-sectional view showing the overall configuration of Embodiment 4 of the volume reduction device. In the fourth embodiment, the lever body 55 is directly driven by the motor 73. Since the lever body 55 rotates at a low speed, the motor 73 is preferably a flat motor with a reduction gear, for example. Further, the motor 74 is also directly connected to the rotational drive of the rotary tooth member 65.

  With such a structure, the motors 73 and 74 are required to be individually different from the above-described configuration, but a mechanism for driving the belt is not necessary and the cost can be reduced. Yes, and maintenance is simplified. However, it is a disadvantage that the motor 73 for the lever body 55 protrudes outward from the main body of the volume reducing device 51 to increase the installation space (floor area), but the main body itself has a smaller width than the above-described configuration. Is possible.

[Embodiment 5]
Embodiment 5 of the volume reduction device is another modification of Embodiment 3 described above, and its configuration is shown in FIG. FIG. 13 is a partial side cross-sectional view showing the overall configuration of the volume reducing device 51 of the fifth embodiment. In the fifth embodiment, the lever body 55 and the rotating tooth member 65 are driven by a single motor 75. The drive of the lever body 55 from the motor 75 is performed via the pulley and the belt 58 in the same manner as described above. However, the rotational driving of the rotating tooth member 65 is performed via the pair of bevel gears 76 and 77, and With the configuration of changing the direction, the same motor 75 as that for driving the lever body 55 is used.

  The respective bevel gears 76 and 77 are supported by the support portions 78 and 79 of the volume reducing device 51 through bearings so as to be freely rotatable. The rotating tooth member 65 has a structure having a spline 80 between the rotating tooth member 65 and the bevel gear 77 so as to be movable in the vertical direction. That is, a spline shaft is formed on the shaft portion of the rotating tooth member 65, and a spline hole is formed on the inner periphery of the shaft portion of the bevel gear 77. The spline shaft on the rotating tooth member 65 side is inserted into the spline hole on the bevel gear 77 side, and the spline shaft and the spline hole are engaged. With such a structure including the spline 80, the rotating tooth member 65 is driven to rotate by the bevel gear 77 and is also movable in the vertical direction, and can be driven to rotate by the motor 75. Become. This structure is configured to drive two rotating bodies by a single motor 75, but the structure becomes complicated, and thus design ingenuity is required to reduce the cost.

[Embodiment 6]
FIG. 14 shows a sixth embodiment of the volume reduction device, and is a cross-sectional view showing a crushing / compression device 103 having a fixed tooth member 101 and a rotating tooth member 102 in an individual configuration. The crushed foamed polystyrene 104 that is crushed and conveyed from a crushing device such as the conveying / compressing device 6 of the main body 1 and the crushing chamber 60 of the volume reducing device 51 is fed into the crushing / compressing device 103 and crushed. The fixed tooth member 101 and the rotating tooth member 102 of the crushing / compressing device 103 are made of artificially manufactured ceramics (for example, ceramics manufactured by firing), or natural or artificial stone. .

  If the fixed tooth member 101 and the rotating tooth member 102 are made of metal, static electricity is generated when they are rubbed together, and the pulverized foamed polystyrene adheres to surrounding equipment. For this reason, the removal treatment of a polystyrene foam etc. is needed and there exists a possibility that an operation | work may be complicated. For this reason, the tooth member was made of a ceramic or stone nonmetal that does not generate static electricity. The fixed tooth member 101 and the rotating tooth member 102 may be made of hard wood if the replacement is facilitated and periodically replaced, or in the case of a simple structure that is not frequently used.

  The crushing / compressing device 103 has an independent configuration and is detachable from the main body 1. A support shaft 108 is rotatably provided on a support portion 106 fixed to the frame 105 via a bearing 107. A pulley 109 is attached to a part of the support shaft 108, and is connected via a belt 113 and a pulley 112 directly connected to a drive motor 111. The drive motor 111 is fixed to a stay 110 integrated with the frame 105.

  Accordingly, the support shaft 108 can be freely rotated by the drive motor 111 via the belt 113. On the other hand, the rotating tooth member 102 is attached to the other end of the support shaft 108 via a support shaft fixing member 114. The support shaft fixing member 114 is integrated with the rotating tooth member 102 via a bolt 115. A female screw is formed in the inner hole at the center of the support shaft fixing member 114, and this female screw is screwed to a male screw at the upper shaft end of the support shaft 108. The axial position of the rotating tooth member 102 is determined by relative length adjustment with respect to the support shaft 108, and when the position is determined, the nut 120 is tightened, and the support shaft 108 and the support shaft fixing member 114 are integrated.

  With this configuration, the rotating tooth member 102 is supported by the support portion 106 with the bearing 107, and thus is rotationally driven via the support shaft 108 by the rotation of the drive motor 111. A fixed tooth member 101 fixed to the frame 105 is disposed and fixed on the upper portion so as to face the rotating tooth member 102. A through hole 116 that is a hole penetrating the fixed tooth member 101 is provided at the center of the fixed tooth member 101. The crushed foamed polystyrene can be put into the through hole 116. The fixed tooth member 101 and the rotating tooth member 102 are adjusted to have a predetermined gap (for example, about 1 mm). Specifically, it is determined by adjusting the screwing between the support shaft fixing member 114 and the support shaft 108 described above.

  Since the process of crushing and transporting the expanded polystyrene is the same as that described above, detailed description of the crushing process is omitted. The crushed foamed polystyrene 104 is crushed as follows. The crushing / compressing device 103 is provided in a lower portion of the base crushing device. The crushed foamed polystyrene 104 is put into the through hole 116 of the fixed tooth member 101 from above as indicated by an arrow. The crushed foamed polystyrene 104 rotates the fixed tooth member 101 and the rotating tooth member 102 relative to each other, thereby causing the stone mortar to grind through the gap between the two teeth, thereby further pulverizing the crushed foamed polystyrene.

  The pulverized foamed polystyrene 117 is pulverized while gradually moving to the outer peripheral side of the fixed tooth member 101 and the rotary tooth member 102, and is discharged from the outer peripheral gap. The discharged crushed foamed polystyrene 117 is collected in a cover 118 fixed to the frame 105, and is discharged to the outside from a collection chute 119 provided on the frame 105. In order to increase the efficiency of the recovery, collection by a suction method or a scraping plate or the like is provided on the rotating tooth member 102 so that the recovery is facilitated by collecting the rotating tooth member 102 on the collecting chute as appropriate. Done. The discharged pulverized foamed polystyrene 117 is collected and processed by a separate collection device as a pulverized body. In any case, according to the configuration of the present embodiment, since it has a two-stage configuration of crushing and pulverization, the polystyrene foam is finely crushed and is easy to perform post-processing.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment. Needless to say, changes can be made without departing from the scope and spirit of the present invention. For example, the fixed tooth member 14, the rotary tooth member 17, the fixed tooth member 27, the tooth member 29, the fixed tooth member 64, and the rotary tooth member 65 are artificially manufactured ceramics (for example, ceramics manufactured by firing), Alternatively, it may be made of natural or artificial stone.

FIG. 1 is a front view schematically showing the entirety of the expanded polystyrene volume reducing device according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the main configuration of the volume reduction device for polystyrene foam. FIG. 3 is a side view showing the configuration of the teeth of the rotating tooth member. FIG. 4 is a side view showing a configuration of teeth of the fixed tooth member. 5 is a cross-sectional view taken along the line AA in FIG. 6 is a cross-sectional view taken along the line BB in FIG. FIG. 7 is a partial cross-sectional view showing the adjustment structure of the rotating tooth member. FIG. 8 is a cross-sectional view showing the main configuration of the expanded polystyrene volume reducing device of the second embodiment. FIG. 9 is a view taken in the direction of arrow X in FIG. FIG. 10 is a front cross-sectional view showing the overall configuration of the expanded polystyrene volume reducing device of the third embodiment. FIG. 11 is a side cross-sectional view showing the overall configuration of the volume reduction device for polystyrene foam according to the third embodiment. FIG. 12 is a partial side cross-sectional view showing the overall configuration of the expanded polystyrene volume reducing device of the fourth embodiment. FIG. 13 is a partial side cross-sectional view showing the overall configuration of the expanded polystyrene volume reducing device of the fifth embodiment. FIG. 14 is a cross-sectional view showing a pulverization / compression device of the polystyrene foam volume reduction device of the sixth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Caster 3 ... Input part 4 ... Hopper 5 ... Styrofoam 6 ... Conveyance / compression apparatus 7 ... Crushing / compression apparatus 8 ... Discharge port 9 ... Motor 11 ... Support body 12 ... Screw shaft 13 ... Spiral blade 14 ... fixed tooth member 17 ... rotating tooth member

Claims (10)

A substrate (1) having a hopper (4) for accepting the input of polystyrene foam (5);
A rotatable shaft body (12) supported on the base body (1) and below the hopper (4);
A crushing member (13) that is fixed to the outer periphery of the shaft body (12) and crushes the charged polystyrene foam while rotating,
A driving device (9) provided on the base body (1) for rotationally driving the shaft body (12);
A fixed tooth member (14) in which teeth (14a) for crushing the expanded polystyrene are formed on a disk-shaped member fixed to the base body (1);
In order to pulverize the foamed polystyrene (5) fixed to the shaft body (12) facing the teeth (14a) of the fixed tooth member (14) and crushed by the crushing member (13), And a rotating tooth member (17) having teeth (17a) formed on a shaped member. In the volume reduction apparatus of the polystyrene foam of Claim 1,
The crushing member (13) is a spiral wing (13) fixed to the shaft body (12). A substrate having a hopper (53) for accepting the input of polystyrene foam (5);
A rotatable first shaft body (56) supported on the base body and below the hopper (4);
A lever body (55) which is fixed to the outer periphery of the first shaft body (56) and has a blade portion (54) on the outer edge to rotate the foamed polystyrene foam while rotating;
A first driving device (57) provided on the base body for rotating the first shaft body (56);
A fixed tooth member (64) in which teeth for crushing the expanded polystyrene are formed on a disk-shaped member fixed to the base;
A rotating tooth member having teeth formed on a disk-shaped member for pulverizing the foamed polystyrene (5) crushed by the lever body (55) facing the teeth of the fixed tooth member (64) ( 65)
A second shaft body (66) rotatably supported by the base body and having the rotating tooth member (65) fixed thereto;
A volume reduction device for polystyrene foam, comprising: a second drive device (68) for rotationally driving the second shaft body (66). In the volume reduction apparatus of the polystyrene foam of Claim 1 selected from Claims 1 thru | or 3,
The teeth (14a) of the fixed tooth members (14, 64) and the teeth (17a) of the rotating tooth members (17, 65) are provided along the radial direction on the disk-shaped member, and are relatively rotated. A device for reducing the volume of polystyrene foam, characterized in that the teeth are in a shape that intersects with each other in a state opposite to each other. In the volume reduction apparatus of the polystyrene foam of Claim 1 selected from Claims 1 thru | or 3,
The position of the rotating tooth member (17, 65) is adjusted by an adjusting member (18, 19, 72) that can adjust the gap between the teeth facing the fixed tooth member (14, 64). This is a volume reduction device for polystyrene foam. In the volume reduction apparatus of the polystyrene foam of Claim 1 selected from Claims 1 thru | or 3,
The teeth (14a) of the fixed tooth members (14, 64) and the teeth (17a) of the rotating tooth members (17, 65) are formed to have an uneven step shape on the face plate. A volume reduction device for polystyrene foam. In the volume reduction apparatus of the polystyrene foam of Claim 1 selected from Claims 1 thru | or 3,
The fixed tooth member (27, 64) is detachably provided on the base body (1). In the volume reduction apparatus of the polystyrene foam of Claim 1 selected from Claims 1 thru | or 3,
The volume reduction device for polystyrene foam, wherein the fixed tooth member (14, 27, 64, 101) and the rotary tooth member (17, 29, 65, 102) are ceramics manufactured by firing. . In the volume reduction apparatus of the polystyrene foam of Claim 1 selected from Claims 1 thru | or 3,
The polystyrene foam volume reducing device, wherein the fixed tooth member (14, 27, 64, 101) and the rotary tooth member (17, 29, 65, 102) are natural or artificial stone. In the volume reduction apparatus of the polystyrene foam of Claim 3,
The first drive device (57) and the second drive device (68) are the same drive source (75), and the first shaft body (56) and the second shaft body (66) are interlocking mechanisms. (76, 77, 58) Connected via (76, 77, 58).

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